L-25-230, Core Operating Limits Report Mid-Cycle Revision

From kanterella
Jump to navigation Jump to search
Core Operating Limits Report Mid-Cycle Revision
ML26009A001
Person / Time
Site: Beaver Valley
Issue date: 01/08/2026
From: Hicks J
Vistra Operations Company
To:
Office of Nuclear Reactor Regulation, Document Control Desk
References
L-25-230
Download: ML26009A001 (0)
v • d • e


Text

January 8, 2026 L-25-230 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject:

Beaver Valley Power Station, Unit No. 2 Docket No. 50-412, License No. NPF-73 Jack C. Hicks Senior Manager, Fleet Licensing Vistra Operations Company LLC P.O. Box 1002 6322 North FM 56 Glen Rose, TX 76043 Office: 254.897.6725 Core Operatin& Limits Report Mid-Cycle Revision Pursuant to the requirements of Beaver Valley Power Station, Unit No. 2 Technical Specification (TS) 5.6.3, "CORE OPERA TING LIMITS REPORT (COLR)," Vistra Operations Company LLC hereby submits the mid-cycle revision 25-1 for the COLR. TS 5.6.3.d requires, in part, that the COLR be provided to the Nuclear Regulatory Commission upon issuance for any mid-cycle revisions or supplements. This mid-cycle COLR revision was made effective on December 29, 2025.

The COLR was revised to update Figure 5.1.4, "Axial Flux Difference Limits as a Function of Percent of Rated Thermal Power for RAOC," with values applicable to Cycle 25. This figure update was inadvertently missed when the Cycle 25 COLR was issued.

There are no regulatory commitments contained in this submittal. If there are any questions, or if additional information is required, please contact me at (254) 897-6725 or jack.hicks@vistracorp.com.

Sincerely, Jack Hicks (Jan 8, 2026 14:09:11 CST)

Jack C. Hicks

Enclosure:

Beaver Valley Power Station, Unit No. 2, Core Operating Limits Report, Mid-Cycle 25-1 Revision cc:

NRC Region I Administrator NRC Resident Inspector NRR Project Manager Director BRP/DEP Site BRP /DEP Representative

Enclosure L-25-230 Beaver Valley Power Station, Unit No. 2, Core Operating Limits Report, Mid-Cycle 25-1 Revision (17 pages follow)

Licensing Requirements Manual Core Operating Limits Report 5.1 5.0 ADMINISTRATIVE CONTROLS 5.1 Core Operating Limits Report This Core Operating Limits Report provides the cycle specific parameter limits developed in accordance with the NRC approved methodologies specified in Technical Specification Administrative Control 5.6.3.

5.1.1 5.1.2 5.1.3 SL 2.1.1 Reactor Core Safety Limits See Figure 5.1-1.

SHUTDOWN MARGIN (SOM)

a.

In MODES 1, 2, 3, and 4, SHUTDOWN MARGIN shall be~ 1.77% ~k/k.<1l

b.

Prior to manually blocking the Low Pressurizer Pressure Safety Injection Signal, the Reactor Coolant System shall be borated to ~ the MODE 5 boron concentration and shall remain ~ this boron concentration at all times when this signal is blocked.

c.

In MODE 5, SHUTDOWN MARGIN shall be ~ 1.0% ~k/k.

LCO 3.1.3 Moderator Temperature Coefficient (MTC)

a.

Upper Limit - MTC shall be maintained within the acceptable operation limit specified in Technical Specification Figure 3.1.3-1.

b.

Lower Limit - MTC shall be maintained less negative than - 4.29 x 10-4

~k/k/°F at RATED THERMAL POWER.

c.

300 ppm Surveillance Limit: (- 35 pcm/°F)

d.

[deleted]

(1) The MODE 1 and MODE 2 with kett ~ 1.0 SDM requirements are included to address SDM requirements (e.g., MODE 1 Required Actions to verify SDM) that are not within the applicability of LCO 3.1.1, SHUTDOWN MARGIN (SDM).

Beaver Valley Unit 2 5.1 - 1 COLR Cycle 25-1 LRM Revision 109

Licensing Requirements Manual Core Operating Limits Report 5.1 5.1 Core Operating Limits Report If the revised predicted MTC is less negative than the SR 3.1.3.2 limit (COLR 5.1.3.c) and all of the benchmark data contained in the surveillance procedure are met, then an MTC measurement in accordance with SR 3.1.3.2 is not required.

e.

60 ppm Surveillance Limit: (- 40.5 pcm/°F) 5.1.4 LCO 3.1.5 Shutdown Bank Insertion Limits The Shutdown Banks shall be withdrawn to at least 225 steps. <2J 5.1.5 LCO 3.1.6 Control Bank Insertion Limits 5.1.6

a.

Control Banks A and B shall be withdrawn to at least 225 steps. <2l

b.

Control Banks C and D shall be limited in physical insertion as shown in Figure 5.1-2. <2l

c.

Sequence Limits - The sequence of withdrawal shall be A, B, C and D bank, in that order.

d.

Overlap Limits<2J - Overlap shall be such that step 129 on banks A, B, and C corresponds to step 1 on the following bank. When C bank is fully withdrawn, these limits are verified by confirming D bank is withdrawn at least to a position equal to the all-rods-out position minus 128 steps.

LCO 3.2.1 Heat Flux Hot Channel Factor (Fa(Z))

The Heat Flux Hot Channel Factor - F0 (Z) limit is defined by:

F0(Z)s [ c:i*K(Z) for P > 0.5 F0(Z) ~ [cFal*K(Z) 0.5 j Where:

CFQ = 2.40 for P ~ 0.5 THERMAL POWER p = RA TED THERMAL POWER K(Z) = the function obtained from Figure 5.1-3.

F~(Z)=F~(Z)*l.0815$

pw(Z)=[F (Z)]M * [T(Z)foLR *A (Z)*[R*]coLRx10815$ for P > 0 5 Q

XY Surv p

XY J

F~ (Z)=[Fxv(Z)Wurv * [T(z;_~oLR *Axv(Z)*[RlOLRXl.0815$ for P ~ 0.5 (2) As indicated by the group demand counter An additional uncertainty is to be applied if the number of measured thimbles for the moveable incore detector system is less than 75% of the total number of thimbles. If there are less than 75% of the total number of thimbles and at least 50% of the total number of thimbles measured, and additional uncertainty of (0.01)*(3-T/12.5) is added to the measurement uncertainty, 1.05, where T is the total number of measured thimbles. This adjusted measurement uncertainty is then multiplied by 1.03 to obtain the total uncertainty to be applied. At least three measured thimbles per core quadrant are also required.

Beaver Valley Unit 2 5.1 - 2 COLR Cycle 25-1 LRM Revision 109

Licensing Requirements Manual Core Operating Limits Report 5.1 5.1 Core Operating Limits Report 5.1.7 5.1.8

[Fxv(Z)Wurv is the measured planar radial peaking factor and is equal to the value of F~(Z)/PM(z), where pM(z) is the measured core average axial power shape.

The T(Z) values in Tables 5.1-1 and 5.1-2 were generated assuming that they will be used for a full power surveillance, applicable to RAOC Operating Space (ROS)

  1. 1 and #2, respectively. The Ri values in Table 5.1-3 and 5.1-4 were generated to account for the increase in Fa between surveillances, applicable to ROS #1 and
  1. 2, respectively. The Axv(Z) factors adjust the surveillance to the reference conditions assumed in generating the T(Z) factors. Axv(Z) may be assumed to equal 1.0 or may be determined for specific surveillance conditions using the approved methods listed in TS 5.6.3.

Either ROS1 or ROS2 may be implemented at any time during operation.

If ROS 1 is implemented and entering LCO 3.2.1 Condition B for F~ (Z) not within limits, EITHER take Action 8.1.1 and implement ROS2, OR take Action 8.2.1 by using Table 5.1-5 to determine required THERMAL POWER and AFD limits based on Required F~ (Z) margin improvement.

If ROS2 is implemented and entering LCO 3.2.1 Condition B for F~ (Z) not within limits, take Action 8.2.1 by using Table 5.1-5 to determine required THERMAL POWER and AFD limits based on Required F~ (Z) margin improvement.

LCO 3.2.2 Nuclear Enthalpy Rise Hot Channel Factor ( FfH)

F~H :::; CF.llH * (1 + PF.llH (1-P)) $

Where:

CF.llH = 1.62 PF.llH

= 0.3 THERMAL POWER p = RATEDTHERMALPOWER LCO 3.2.3 Axial Flux Difference (AFD}

The AFD acceptable operation limits for both ROS1 and ROS2 are provided in Figure 5.1-4.

An additional uncertainty is to be applied if the number of measured thimbles for the moveable incore detector system is less than 75% of the total number of thimbles. If there are less than 75% of the total number of thimbles and at least 50% of the total number of thimbles measured, and additional uncertainty of (0.01)*(3-T/12.5) is added to the standard uncertainty on FNAH of 1.04, where T is the total number of measured thimbles. At least three measured thimbles per core quadrant are also required.

Beaver Valley Unit 2 5.1 -3 COLR Cycle 25-1 LRM Revision 109

Licensing Requirements Manual Core Operating Limits Report 5.1 5.1 Core Operating Limits Report 5.1.9 LCO 3.3.1 Reactor Trip System Instrumentation - Overtemperature and Overpower AT Parameter Values from Table Notations 3 and 4

a.

Overtemperature AT Setpoint Parameter Values:

Parameter Value Overtemperature AT reactor trip setpoint K1 :s:; 1.239 Overtemperature AT reactor trip setpoint Tavg K2;?: 0.0183/°F coefficient Overtemperature AT reactor trip setpoint pressure K3;?: 0.001/psia coefficient Tavg at RATED THERMAL POWER T' :s:; 574.2°F<1>

Nominal pressurizer pressure P' ;?: 2250 psia Measured reactor vessel AT lead/lag time constants 1:1 = 0 sec*

(* The response time is toggled off to meet the analysis 1:2 = O sec*

value of zero.)

Measured reactor vessel AT lag time constant

,:3 :s:; 6 secs Measured reactor vessel average temperature lead/lag

,:4 ;?: 30 secs time constants

,:5 :s:; 4 secs Measured reactor vessel average temperature lag time 1:6 :s:; 2 secs constant f (Al) is a function of the indicated difference between top and bottom detectors of the power-range nuclear ion chambers, with gains to be selected based on measured instrument response during plant startup tests such that:

(i)

For qt - qb between -37% and +15%, f1 (Al) = 0, where qt and qb are percent RATED THERMAL POWER in the top and bottom halves of the core respectively, and qt + qb is total THERMAL POWER in percent of RATED THERMAL POWER.

(ii)

For each percent that the magnitude of (qt - qb) exceeds -37%, the AT trip setpoint shall be automatically reduced by 2.52% of its value at RA TED THERMAL POWER.

(iii)

For each percent that the magnitude of (qt-qb) exceeds +15%, the AT trip setpoint shall be automatically reduced by 1.47% of its value at RA TED THERMAL POWER.

(1) T' represents the cycle-specific Full Power Tavg value used in core design.

Beaver Valley Unit 2 5.1 -4 COLR Cycle 25-1 LRM Revision 109

Licensing Requirements Manual 5.1 Core Operating Limits Report

b.

Overpower AT Setpoint Parameter Values:

Parameter Overpower AT reactor trip setpoint Overpower AT reactor trip setpoint Tavg rate/lag coefficient Overpower AT reactor trip setpoint Tavg heatup coefficient Tavg at RATED THERMAL POWER Measured reactor vessel AT lead/lag time constants Core Operating Limits Report 5.1 K4 :s; 1.094 K5 ~ 0.02/°F for increasing average temperature K5 = 0/°F for decreasing average temperature K6 ~ 0.0021/°F for T > T" K6 = 0/°F for T :s; T" T" :s; 57 4.2°F<1l t1 = 0 sec*

t2 = 0 sec*

(* The response time is toggled off to meet the analysis value of zero.)

Measured reactor vessel AT lag time constant Measured reactor vessel average temperature lag time constant Measured reactor vessel average temperature rate/lag time constant t3 :s; 6 secs ts :s; 2 secs t1 ~ 10 secs (1) T" represents the cycle-specific Full Power Tavg value used in core design.

Beaver Valley Unit 2 5.1 -5 COLR Cycle 25-1 LRM Revision 109

Licensing Requirements Manual 5.1 Core Operating Limits Report Core Operating Limits Report 5.1 5.1.10 LCO 3.4.1, RCS Pressure, Temperature, and Flow Departure from Nucleate Boiling {DNB) Limits 5.1.11 Parameter Reactor Coolant System Tavg Pressurizer Pressure Reactor Coolant System Total Flow Rate LCO 3.9.1 Boron Concentration (MODE 6)

Indicated Value Tavg :s:; 577.8°F<1>

Pressure~ 2214 psia<2>

Flow ~ 267,483 gpm<3>

The boron concentration of the Reactor Coolant System, the refueling canal, and the refueling cavity shall be maintained ~ 2400 ppm. This value includes a 50 ppm conservative allowance for uncertainties.

(1)

The Reactor Coolant System (RCS) indicated Tavg value is determined by adding the appropriate allowances for rod control operation and verification via control board indication (3.6°F) to the cycle specific full power Tavg used in the core design.

(2)

The pressurizer pressure value includes allowances for pressurizer pressure control operation and verification via control board indication.

(3)

The RCS total flow rate includes allowances for normalization of the cold leg elbow taps with a beginning of cycle precision RCS flow calorimetric measurement and verification on a periodic basis via control board indication.

Beaver Valley Unit 2 5.1 -6 COLR Cycle 25-1 LRM Revision 109

Licensing Requirements Manual 5.1 Core Operating Limits Report 5.1.12 References Core Operating Limits Report 5.1

1.

WCAP-9272-P-A, "WESTINGHOUSE RELOAD SAFETY EVALUATION METHODOLOGY," July 1985 (Westinghouse Proprietary).

2.

WCAP-8745-P-A, "Design Bases for the Thermal Overpower AT and Thermal Overtemperature AT Trip Functions," September 1986.

3.

WCAP-16996-P-A, Revision 1, "Realistic LOCA Evaluation Methodology Applied to the Full Spectrum of Break Sizes (FULL SPECTRUM LOCA Methodology)," November 2016.

4.

WCAP-10216-P-A, Revision 1A, "Relaxation of Constant Axial Offset Control-Fa Surveillance Technical Specification," February 1994.

5.

WCAP-14565-P-A, "VIPRE-01 Modeling and Qualification for Pressurized Water Reactor Non-LOCA Thermal-Hydraulic Safety Analysis,"

October 1999.

6.

WCAP-12610-P-A, "VANTAGE+ Fuel Assembly Reference Core Report,"

April 1995 (Westinghouse Proprietary).

7.

WCAP-15025-P-A, "Modified WRB-2 Correlation, WRB-2M, for Predicting Critical Heat Flux in 17x17 Rod Bundles with Modified LPD Mixing Vane Grids," April 1999.

8.

Caldon, Inc. Engineering Report-BOP, "Improving Thermal Power Accuracy and Plant Safety While Increasing Operating Power Level Using the LEFM"1"M System," Revision 0, March 1997.

9.

Caldon, Inc. Engineering Report-160P, "Supplement to Topical Report ER-BOP: Basis for a Power Uprate With the LEFM"1"M System," Revision 0, May 2000.

10.

WCAP-137 49-P-A, "Safety Evaluation Supporting the Conditional Exemption of the Most Negative EOL Moderator Temperature Coefficient Measurement," March 1997 (Westinghouse Proprietary).

11.

WCAP-16045-P-A, "Qualification of the Two-Dimensional Transport Code PARAGON," August 2004.

12.

WCAP-16045-P-A, Addendum 1-A, "Qualification of the NEXUS Nuclear Data Methodology," August 2007.

13.

WCAP-12610-P-A & CENPD-404-P-A, Addendum 1-A "Optimized ZIRLO'," July 2006.

14.

WCAP-17661-P-A, Revision 1, "Improved RAOC and CAOC Fa Surveillance Technical Specifications", February 2019.

Beaver Valley Unit 2 5.1 - 7 COLR Cycle 25-1 LRM Revision 109

Licensing Requirements Manual Core Operating Limits Report 5.1 670...------.--------.-----,-----~------.--------.-------,

UNACCEPTABLE OPERATION 600 ACCEPTABLE OPERATION 580...,._ ___

0 0.2 Beaver Valley Unit 2 0.4 0.6 0.8 1

FRACTION OF RATED THERMAL POWER Figure 5.1-1 (Page 1 of 1)

REACTOR CORE SAFETY LIMIT THREE LOOP OPERATION (Technical Specification Safety Limit 2.1.1) 5.1 -8 1.2 1.4 COLR Cycle 25-1 LRM Revision 109

C:,:

~

"O

..c:

+-'

~

1/)

a.

Q)

+-'

en -

z 0

j:::

u5 0

a.

~

z

<(

III Cl 0

0:::

Licensing Requirements Manual Core Operating Limits Report 5.1 200 150 100 so 0

0 20 Beaver Valley Unit 2 40 60 PERCENT OF RATED THERMAL POWER Figure 5.1-2 (Page 1 of 1)

CONTROL ROD INSERTION LIMITS AS A FUNCTION OF RATED POWER LEVEL 5.1 -9 80 100 COLR Cycle 25-1 LRM Revision 109

Licensing Requirements Manual 1.2 a.a, 1.00 I 1.0 0.8

~ 0.6 0.4 0.2 0.0 0

2 1 e.o, 1.00 I 4

6 Core Height (feet)

Figure 5.1-3 (Page 1 of 1) 8 Core Operating Limits Report 5.1 I 12.0, 1.00 I 10 12 Fa T NORMALIZED OPERATING ENVELOPE, K(Z)

Beaver Valley Unit 2 5.1 - 10 COLR Cycle 25-1 LRM Revision 109

Licensing Requirements Manual Core Operating Limits Report 5.1 ROSl ROS2 RAl RA2 120 110 100 90 I..

cu r--

I I

UNACCEPTABLE I

UNACCEPTABLE OPERATION '

OPERATION 3:

80 0

a.

j I nl 70 E

I..

cu 60

.c I-

"C cu so I

ACCEPTABLE I

OPERATION i

I I

\

nl a: -

0 40 30 20 10 0

-60

-50

-40

-30

-20

-10 0

10 20 30 40 so 60 Axial Flux Difference (Delta I)%

ROS1

(-25%, 50%) (-8%, 100%)

(8%, 100%) (22%, 50%)

RA1

(-23%, 50%) (-7.7%, 95%)

(7.4 %, 95%) (20%, 50%)

Figure 5.1-4 (Page 1 of 1)

ROS2

(-23%, 50%) (-6%, 100%)

(6%, 100%) (20%, 50%)

RA2

(-23%, 50%) (-9.4%, 90%)

(8.8%, 90%) (20%, 50%)

AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF PERCENT OF RA TED THERMAL POWER FOR RAOC Beaver Valley Unit 2 5.1 - 11 COLR Cycle 25-1 LRM Revision 109

Licensing Requirements Manual Core Operating Limits Report 5.1

-29.00 E-t z -30.00 rz1 H u H

t:

~

u I I E-t -31.00

~

~

rz1 Q i

~

-32.00 14000 Beaver Valley Unit 2 CYCLE BURNUP MTC (MWD/MTU)

(pcm/°F) 14000

-30.119 18000

-31.349

~

I'---..

"--~

~

~

" ~

15000 16000 17000 CYCLE BURNUP (MWD/MTU)

Figure 5.1-5 (Page 1 of 1)

HOT FULL POWER PREDICTED MODERATOR TEMPERATURE COEFFICIENT AS A FUNCTION OF CYCLE BURNUP WHEN 300 PPM IS ACHIEVED 5.1 - 12

~

18000 COLR Cycle 25-1 LRM Revision 109

Axial Point 1*

2*

3*

4*

5*

6*

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56*

57*

58*

59*

60*

61*

Licensing Requirements Manual Table 5.1-1 (Page 1 of 1)

Core Operating Limits Report 5.1 Fa Surveillance T(Z) Function versus Burn up at 100% RTP for ROS 1 Elevation 150 1000 2000 3000 4000 6000 (fl)

(MWD/MTU)

(MWD/MTU)

(MWD/MTU)

(MWD/MTU)

(MWD/MTU)

(MWD/MTU) 12.0720 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 11.8708 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 11.6696 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 11.4684 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 11.2672 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 11.0660 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 10.8648 1.0552 1.0383 1.0094 1.0003 1.0058 1.0316 10.6636 1.1121 1.0996 1.0808 1.0746 1.0828 1.1098 10.4624 1.1986 1.1890 1.1768 1.1718 1.1812 1.2075 10.2612 1.2205 1.2141 1.2092 1.2059 1.2163 1.2406 10.0600 1.1779 1.1751 1.1773 1.1763 1.1878 1.2097 9.8588 1.1939 1.1887 1.1988 1.1965 1.2122 1.2261 9.6576 1.2691 1.2572 1.2800 1.2782 1.2920 1.2926 9.4564 1.2824 1.2733 1.2967 1.2954 1.3084 1.3049 9.2552 1.2323 1.2338 1.2550 1.2551 1.2669 1.2640 9.0540 1.2101 1.2216 1.2347 1.2357 1.2460 1.2425 8.8528 1.2772 1.2951 1.3011 1.3017 1.3098 1.3047 8.6516 1.3315 1.3487 1.3535 1.3539 1.3605 1.3554 8.4504 1.3129 1.3306 1.3379 1.3390 1.3453 1.3405 8.2492 1.2678 1.2856 1.2950 1.2971 1.3033 1.2998 8.0480 1.3246 1.3425 1.3530 1.3544 1.3591 1.3529 7.8468 1.3735 1.3913 1.4027 1.4035 1.4066 1.3977 7.6456 1.3454 1.3632 1.3760 1.3774 1.3800 1.3714 7.4444 1.2815 1.2992 1.3133 1.3157 1.3183 1.3111 7.2432 1.2979 1.3155 1.3306 1.3329 1.3344 1.3257 7.0420 1.3571 1.3760 1.3918 1.3932 1.3929 1.3793 6.8408 1.3600 1.3801 1.3967 1.3981 1.3969 1.3806 6.6396 1.2928 1.3138 1.3313 1.3340 1.3332 1.3177 6.4384 1.2666 1.2884 1.3064 1.3096 1.3085 1.2921 6.2372 1.3198 1.3424 1.3606 1.3630 1.3600 1.3388 6.0360 1.3166 1.3399 1.3584 1.3609 1.3574 1.3349 5.8348 1.2533 1.2747 1.2933 1.2968 1.2917 1.2728 5.6336 1.2034 1.2239 1.2428 1.2470 1.2446 1.2270 5.4324 1.2505 1.2705 1.2897 1.2939 1.2922 1.2682 5.2312 1.2829 1.2984 1.3178 1.3214 1.3217 1.3006 5.0300 1.2721 1.2873 1.3070 1.3095 1.3082 1.2913 4.8288 1.2607 1.2751 1.2946 1.2983 1.2952 1.2831 4.6276 1.2628 1.2764 1.2955 1.2999 1.2952 1.2844 4.4264 1.2725 1.2849 1.3034 1.3085 1.3029 1.2940 4.2252 1.2557 1.2670 1.2846 1.2910 1.2860 1.2791 4.0240 1.1945 1.2046 1.2218 1.2305 1.2267 1.2228 3.8228 1.1904 1.1996 1.2166 1.2265 1.2250 1.2201 3.6216 1.2383 1.2479 1.2650 1.2759 1.2751 1.2652 3.4204 1.2457 1.2537 1.2704 1.2819 1.2818 1.2733 3.2192 1.2279 1.2337 1.2481 1.2601 1.2617 1.2584 3.0180 1.2233 1.2278 1.2415 1.2528 1.2541 1.2546 2.8168 1.2330 1.2401 1.2529 1.2619 1.2632 1.2683 2.6156 1.2488 1.2626 1.2734 1.2786 1.2825 1.2917 2.4144 1.2312 1.2470 1.2558 1.2576 1.2649 1.2780 2.2132 1.1828 1.1971 1.2035 1.2019 1.2125 1.2300 2.0120 1.2094 1.2217 1.2244 1.2181 1.2312 1.2514 1.8108 1.2621 1.2712 1.2693 1.2569 1.2717 1.2932 1.6096 1.2577 1.2624 1.2554 1.2378 1.2537 1.2765 1.4084 1.2249 1.2243 1.2122 1.1900 1.2063 1.2298 1.2072 1.1989 1.1908 1.1724 1.1459 1.1595 1.1811 1.0060 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 0.8048 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 0.6036 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 0.4024 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 0.2012 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 0.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000

  • Top and Bottom 10% Excluded Beaver Valley Unit 2 5.1 - 13 8000 10000 (MWD/MTU)

(MWD/MTU) 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0728 1.0917 1.1476 1.1638 1.2401 1.2522 1.2674 1.2759 1.2315 1.2377 1.2434 1.2480 1.3096 1.3109 1.3172 1.3164 1.2681 1.2734 1.2487 1.2504 1.3136 1.3038 1.3557 1.3428 1.3320 1.3226 1.2827 1.2768 1.3283 1.3212 1.3677 1.3558 1.3407 1.3265 1.2819 1.2672 1.2941 1.2754 1.3438 1.3188 1.3456 1.3157 1.2872 1.2563 1.2639 1.2330 1.3090 1.2777 1.3059 1.2768 1.2474 1.2239 1.1996 1.1798 1.2412 1.2182 1.2669 1.2431 1.2596 1.2357 1.2527 1.2293 1.2551 1.2317 1.2657 1.2422 1.2535 1.2312 1.2025 1.1841 1.2028 1.1855 1.2488 1.2350 1.2596 1.2515 1.2504 1.2471 1.2499 1.2469 1.2651 1.2668 1.2912 1.2947 1.2825 1.2880 1.2408 1.2496 1.2666 1.2770 1.3116 1.3228 1.2991 1.3131 1.2560 1.2732 1.2086 1.2278 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 12000 14000 16000 (MWD/MTU)

(MWD/MTU)

(MWD/MTU) 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.1104 1.1788 1.2644 1.2882 1.2513 1.2579 1.3088 1.3078 1.2652 1.2487 1.3037 1.3414 1.3219 1.2777 1.3203 1.3535 1.3250 1.2675 1.2751 1.3164 1.3130 1.2553 1.2293 1.2657 1.2635 1.2122 1.1720 1.2039 1.2272 1.2196 1.2137 1.2162 1.2262 1.2160 1.1716 1.1734 1.2207 1.2372 1.2343 1.2354 1.2550 1.2843 1.2826 1.2507 1.2828 1.3327 1.3294 1.2965 1.2566 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.1294 1.1458 1.1930 1.2033 1.2706 1.2774 1.2854 1.2907 1.2449 1.2486 1.2503 1.2479 1.3045 1.2900 1.3058 1.2942 1.2573 1.2587 1.2363 1.2400 1.2949 1.2883 1.3324 1.3172 1.3125 1.2963 1.2705 1.2588 1.3114 1.2997 1.3434 1.3321 1.3164 1.3081 1.2617 1.2575 1.2692 1.2665 1.3090 1.3064 1.3072 1.3060 1.2535 1.2559 1.2299 1.2345 1.2651 1.2694 1.2585 1.2639 1.2044 1.2121 1.1610 1.1704 1.1883 1.1945 1.2131 1.2192 1.2050 1.2124 1.1999 1.2063 1.2029 1.2074 1.2130 1.2150 1.2040 1.2041 1.1625 1.1621 1.1656 1.1625 1.2083 1.2041 1.2236 1.2182 1.2233 1.2155 1.2260 1.2164 1.2487 1.2361 1.2807 1.2670 1.2823 1.2711 1.2612 1.2538 1.2917 1.2862 1.3453 1.3415 1.3481 1.3491 1.3218 1.3289 1.2882 1.3012 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 COLR Cycle 25-1 LRM Revision 109 18000 (MWD/MTU) 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.1703 1.2225 1.2906 1.2989 1.2540 1.2531 1.2925 1.2925 1.2531 1.2380 1.2867 1.3156 1.2953 1.2639 1.3056 1.3405 1.3204 1.2740 1.2853 1.3263 1.3267 1.2775 1.2558 1.2884 1.2812 1.2288 1.1858 1.2050 1.2227 1.2146 1.2052 1.2045 1.2085 1.1949 1.1539 1.1557 1.1937 1.2034 1.1970 1.2066 1.2371 1.2689 1.2757 1.2626 1.2979 1.3558 1.3686 1.3544 1.3328 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000

Axial Point 1*

2*

3*

4*

5*

6*

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56*

57*

58*

59*

60*

61*

Licensing Requirements Manual Table 5.1-2 (Page 1 of 1)

Core Operating Limits Report 5.1 Fa Surveillance T(Z) Function versus Burnup at 100% RTP for ROS2 Elevation 150 1000 2000 3000 4000 6000 (fl)

(MWD/MTU)

(MWD/MTU)

(MWD/MTU)

(MWD/MTU)

(MWD/MTU)

(MWD/MTU) 12.0720 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 11.8708 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 11.6696 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 11.4684 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 11.2672 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 11.0660 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 10.8648 1.0476 1.0148 0.9905 0.9698 0.9845 1.0094 10.6636 1.1025 1.0742 1.0540 1.0393 1.0574 1.0830 10.4624 1.1864 1.1611 1.1433 1.1296 1.1506 1.1753 10.2612 1.2060 1.1851 1.1711 1.1663 1.1826 1.2054 10.0600 1.1618 1.1483 1.1372 1.1438 1.1533 1.1740 9.8588 1.1711 1.1655 1.1577 1.1705 1.1717 1.1890 9.6576 1.2338 1.2416 1.2382 1.2482 1.2436 1.2509 9.4564 1.2429 1.2578 1.2565 1.2701 1.2630 1.2615 9.2552 1.1966 1.2169 1.2183 1.2298 1.2245 1.2176 9.0540 1.1773 1.1974 1.2009 1.2140 1.2091 1.1942 8.8528 1.2462 1.2649 1.2692 1.2833 1.2779 1.2573 8.6516 1.3025 1.3187 1.3240 1.3397 1.3340 1.3088 8.4504 1.2857 1.3023 1.3101 1.3270 1.3216 1.2943 8.2492 1.2432 1.2597 1.2698 1.2877 1.2832 1.2559 8.0480 1.3009 1.3171 1.3286 1.3468 1.3410 1.3087 7.8468 1.3509 1.3668 1.3795 1.3977 1.3907 1.3538 7.6456 1.3254 1.3411 1.3555 1.3736 1.3671 1.3304 7.4444 1.2645 1.2800 1.2957 1.3136 1.3083 1.2742 7.2432 1.2829 1.2981 1.3151 1.3325 1.3269 1.2911 7.0420 1.3438 1.3599 1.3779 1.3931 1.3862 1.3472 6.8408 1.3491 1.3663 1.3852 1.3980 1.3911 1.3534 6.6396 1.2848 1.3030 1.3228 1.3339 1.3287 1.2965 6.4384 1.2612 1.2802 1.3006 1.3096 1.3051 1.2763 6.2372 1.3167 1.3364 1.3572 1.3629 1.3575 1.3280 6.0360 1.3163 1.3367 1.3578 1.3610 1.3560 1.3290 5.8348 1.2533 1.2725 1.2933 1.2948 1.2914 1.2710 5.6336 1.2030 1.2240 1.2428 1.2472 1.2446 1.2266 5.4324 1.2461 1.2707 1.2900 1.2939 1.2922 1.2649 5.2312 1.2708 1.2970 1.3161 1.3210 1.3218 1.2920 5.0300 1.2572 1.2781 1.2971 1.3061 1.3079 1.2784 4.8288 1.2438 1.2593 1.2782 1.2900 1.2934 1.2645 4.6276 1.2439 1.2567 1.2757 1.2869 1.2914 1.2638 4.4264 1.2514 1.2634 1.2817 1.2905 1.2964 1.2709 4.2252 1.2332 1.2464 1.2623 1.2697 1.2755 1.2538 4.0240 1.1717 1.1885 1.2001 1.2089 1.2134 1.1972 3.8228 1.1662 1.1858 1.1932 1.2024 1.2092 1.1971 3.6216 1.2121 1.2346 1.2378 1.2483 1.2549 1.2462 3.4204 1.2178 1.2399 1.2409 1.2521 1.2579 1.2547 3.2192 1.1986 1.2190 1.2177 1.2295 1.2362 1.2390 3.0180 1.1924 1.2054 1.2083 1.2192 1.2179 1.2334 2.8168 1.2040 1.2080 1.2161 1.2270 1.2247 1.2450 2.6156 1.2260 1.2227 1.2338 1.2451 1.2428 1.2670 2.4144 1.2112 1.2067 1.2154 1.2261 1.2240 1.2525 2.2132 1.1635 1.1570 1.1634 1.1735 1.1721 1.2046 2.0120 1.1898 1.1794 1.1824 1.1909 1.1889 1.2248 1.8108 1.2416 1.2260 1.2245 1.2306 1.2268 1.2649 1.6096 1.2372 1.2165 1.2101 1.2134 1.2085 1.2479 1.4084 1.2045 1.1788 1.1676 1.1681 1.1620 1.2016 1.2072 1.1785 1.1459 1.1285 1.1247 1.1163 1.1535 1.0060 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 0.8048 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 0.6036 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 0.4024 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 0.2012 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 0.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000

  • Top and Bottom 10% Excluded Beaver Valley Unit 2 5.1 - 14 8000 10000 (MWD/MTU)

(MWD/MTU) 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0317 1.0561 1.1042 1.1275 1.1939 1.2149 1.2236 1.2398 1.1937 1.2051 1.2085 1.2144 1.2692 1.2682 1.2736 1.2731 1.2246 1.2273 1.1974 1.2008 1.2557 1.2534 1.2970 1.2940 1.2793 1.2776 1.2399 1.2387 1.2885 1.2836 1.3298 1.3213 1.3062 1.2968 1.2517 1.2429 1.2667 1.2555 1.3184 1.3029 1.3234 1.3061 1.2694 1.2532 1.2499 1.2332 1.2984 1.2776 1.2992 1.2768 1.2448 1.2238 1.1997 1.1826 1.2412 1.2175 1.2656 1.2413 1.2543 1.2309 1.2432 1.2202 1.2438 1.2206 1.2513 1.2283 1.2363 1.2166 1.1832 1.1692 1.1815 1.1699 1.2284 1.2140 1.2396 1.2225 1.2300 1.2122 1.2269 1.2114 1.2401 1.2282 1.2655 1.2537 1.2560 1.2490 1.2141 1.2128 1.2383 1.2407 1.2812 1.2864 1.2681 1.2781 1.2253 1.2404 1.1784 1.1971 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 12000 14000 16000 (MWD/MTU)

(MWD/MTU)

(MWD/MTU) 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0837 1.1513 1.2339 1.2541 1.2160 1.2208 1.2689 1.2701 1.2362 1.2197 1.2740 1.3103 1.2904 1.2468 1.2885 1.3212 1.2940 1.2387 1.2474 1.2893 1.2889 1.2357 1.2138 1.2525 1.2541 1.2071 1.1681 1.2041 1.2271 1.2183 1.2091 1.2106 1.2185 1.2063 1.1602 1.1603 1.2022 1.2158 1.2122 1.2123 1.2300 1.2567 1.2533 1.2205 1.2501 1.2972 1.2926 1.2593 1.2195 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.1203 1.1353 1.1835 1.1906 1.2607 1.2622 1.2756 1.2732 1.2332 1.2294 1.2329 1.2263 1.2749 1.2640 1.2663 1.2624 1.2114 1.2262 1.1855 1.2065 1.2373 1.2521 1.2699 1.2799 1.2521 1.2613 1.2177 1.2279 1.2590 1.2679 1.2928 1.3015 1.2694 1.2802 1.2189 1.2324 1.2280 1.2436 1.2680 1.2852 1.2667 1.2869 1.2193 1.2400 1.2015 1.2215 1.2416 1.2589 1.2410 1.2563 1.1932 1.2077 1.1559 1.1689 1.1850 1.1925 1.2066 1.2084 1.1957 1.1993 1.1848 1.1891 1.1844 1.1883 1.1914 1.1929 1.1801 1.1793 1.1374 1.1370 1.1415 1.1394 1.1867 1.1791 1.2001 1.1892 1.1957 1.1820 1.1953 1.1824 1.2139 1.2015 1.2415 1.2275 1.2400 1.2267 1.2116 1.2086 1.2431 1.2394 1.2918 1.2918 1.2920 1.2984 1.2648 1.2782 1.2307 1.2508 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 COLR Cycle 25-1 LRM Revision 109 18000 (MWD/MTU) 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.1314 1.1788 1.2433 1.2535 1.2142 1.2134 1.2518 1.2566 1.2177 1.2023 1.2499 1.2863 1.2746 1.2434 1.2838 1.3178 1.2980 1.2527 1.2642 1.3053 1.3070 1.2610 1.2422 1.2775 1.2732 1.2240 1.1840 1.2040 1.2157 1.2047 1.1919 1.1883 1.1911 1.1770 1.1337 1.1333 1.1714 1.1811 1.1739 1.1815 1.2063 1.2356 1.2408 1.2266 1.2593 1.3139 1.3250 1.3100 1.2880 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000

Licensing Requirements Manual Table 5.1-3 (Page 1 of 1)

Core Operating Limits Report 5.1 Fa Surveillance Ri Factor versus Burnup at 100% RTP for ROS1 Cycle Rj Penalty Cycle Rj Penalty Cycle Rj Penalty Burnup Burnup Burnup (MWD/MTU)

Multiplier (MWD/MTU)

Multiplier (MWD/MTU)

Multiplier S150 1.0439 7972 1.0081 15794 1.0002 346 1.0363 8168 1.0074 15990 1.0013 541 1.0293 8363 1.0067 16185 1.0024 737 1.0231 8559 1.0081 16381 1.0036 932 1.0178 8754 1.0072 16576 1.0043 1128 1.0131 8950 1.0064 16772 1.0047 1323 1.0096 9145 1.0062 16967 1.0050 1519 1.0078 9341 1.0056 17163 1.0052 1714 1.0073 9536 1.0046 17358 1.0053 1910 1.0076 9732 1.0040 17554 1.0053 2106 1.0091 9928 1.0035 17750 1.0052 2301 1.0101 10123 1.0031 17945 1.0049 2497 1.0110 10319 1.0027 18141 1.0050 2692 1.0127 10514 1.0023

?18336 1.0052 2888 1.0126 10710 1.0019 3083 1.0117 10905 1.0016 3279 1.0100 11101 1.0017 3474 1.0081 11296 1.0014 3670 1.0054 11492 1.0029 3865 1.0036 11687 1.0026 4061 1.0022 11883 1.0024 4257 1.0011 12079 1.0022 4452 1.0004 12274 1.0021 4648 1.0000 12470 1.0020 4843 1.0000 12665 1.0019 5039 1.0000 12861 1.0018 5234 1.0000 13056 1.0000 5430 1.0000 13252 1.0000 5625 1.0000 13447 1.0000 5821 1.0000 13643 1.0000 6017 1.0000 13839 1.0000 6212 1.0000 14034 1.0000 6408 1.0000 14230 1.0000 6603 1.0000 14425 1.0000 6799 1.0000 14621 1.0000 6994 1.0000 14816 1.0000 7190 1.0018 15012 1.0000 7385 1.0051 15207 1.0000 7581 1.0076 15403 1.0000 7776 1.0088 15598 1.0000 Note: The Burnup Dependent Transient Fa Margin Decrease Factor Ri, to be applied to Fa(Z) in accordance with Technical Specification Surveillance Requirement (SR) 3.2.1.2, is the maximum factor by which Fa(Z) is expected to increase over a 39 Effective Full Power Day (EFPD) interval (surveillance interval of 31 EFPD plus the maximum allowable extension not to exceed 25% of the surveillance interval per Technical Specification SR 3.0.2) starting from the burnup at which the Fa(Z) was determined. Values may be interpolated to the surveillance cycle burnup.

Beaver Valley Unit 2 5.1 - 15 COLR Cycle 25-1 LRM Revision 109

Licensing Requirements Manual Table 5.1-4 (Page 1 of 1)

Core Operating Limits Report 5.1 Fa Surveillance Ri Factor versus Burnup at 100% RTP for ROS2 Cycle Rj Penalty Cycle Rj Penalty Cycle Rj Penalty Burnup Burnup Burnup (MWD/MTU)

Multiplier (MWD/MTU)

Multiplier (MWD/MTU)

Multiplier S150 1.0411 7972 1.0043 15794 1.0045 346 1.0374 8168 1.0034 15990 1.0058 541 1.0338 8363 1.0051 16185 1.0070 737 1.0302 8559 1.0044 16381 1.0083 932 1.0264 8754 1.0038 16576 1.0091 1128 1.0247 8950 1.0033 16772 1.0095 1323 1.0229 9145 1.0047 16967 1.0098 1519 1.0227 9341 1.0044 17163 1.0100 1714 1.0209 9536 1.0063 17358 1.0101 1910 1.0181 9732 1.0060 17554 1.0100 2106 1.0150 9928 1.0055 17750 1.0098 2301 1.0124 10123 1.0050 17945 1.0094 2497 1.0102 10319 1.0044 18141 1.0095 2692 1.0065 10514 1.0039

?18336 1.0097 2888 1.0043 10710 1.0034 3083 1.0025 10905 1.0029 3279 1.0010 11101 1.0004 3474 1.0000 11296 1.0001 3670 1.0003 11492 1.0000 3865 1.0000 11687 1.0000 4061 1.0000 11883 1.0000 4257 1.0000 12079 1.0000 4452 1.0000 12274 1.0000 4648 1.0000 12470 1.0000 4843 1.0000 12665 1.0000 5039 1.0000 12861 1.0000 5234 1.0000 13056 1.0000 5430 1.0000 13252 1.0000 5625 1.0000 13447 1.0000 5821 1.0000 13643 1.0000 6017 1.0000 13839 1.0000 6212 1.0000 14034 1.0000 6408 1.0000 14230 1.0000 6603 1.0000 14425 1.0000 6799 1.0000 14621 1.0000 6994 1.0022 14816 1.0000 7190 1.0050 15012 1.0000 7385 1.0071 15207 1.0010 7581 1.0069 15403 1.0022 7776 1.0055 15598 1.0033 Note: The Burnup Dependent Transient Fa Margin Decrease Factor Ri, to be applied to Fa(Z) in accordance with Technical Specification Surveillance Requirement (SR) 3.2.1.2, is the maximum factor by which Fa(Z) is expected to increase over a 39 Effective Full Power Day (EFPD) interval (surveillance interval of 31 EFPD plus the maximum allowable extension not to exceed 25% of the surveillance interval per Technical Specification SR 3.0.2) starting from the burnup at which the Fa(Z) was determined. Values may be interpolated to the surveillance cycle burnup.

Beaver Valley Unit 2 5.1 - 16 COLR Cycle 25-1 LRM Revision 109

Licensing Requirements Manual Table 5.1-5 (Page 1 of 1)

Core Operating Limits Report 5.1 Required Thermal Power Limits and AFD Reductions Required Action 8.2.1 AFD Space Reduction ROS1 RA1 2.00%

RA2 2.00%

< 50% RTP ROS2 RA1 0.00%

RA2 0.00%

< 50% RTP Beaver Valley Unit 2 5.1 - 17 Power Reduction 5%

10%

5%

10%

Percent Margin 3.44%

5.87%

0.78%

3.19%

COLR Cycle 25-1 LRM Revision 109

Retrieved from "https://kanterella.com/w/index.php?title=L-25-230,_Core_Operating_Limits_Report_Mid-Cycle_Revision&oldid=5558606"